Origin

MOMO is the prototype of the 100-series realiens. Realiens are humans that were manufactured in factories and are made for different purposes. They don't age, they all have yellow eyes (Yellow eyes are rare on a human, therefore they used that color for help in distinguishing between humans and realiens), they don't reproduce, and the 100-series have a built in Hilbert Wave mechanism.

MOMO is the prototype for the 100-Series Realiens, realiens who look like little girls and are based off of the late Sakura Mizrahi. She contains something known as the "Y-Data," a heavily coded bit of data that contains major info on Dr. Mizrahi, the founder of the U-Tic organization. She was originally being held by the U-Tic organization before Ziggurat 8 rescued her on a government mission.

Dr. Mizrahi, father of Sakura Mizrahi (A girl who was born with a problem so that she couldn't speak in the real world and only in a virtual reality), was the cause of the gnosis outbreak. Sakura and Rubedo spoke the best as their wavelengths were closest. Sakura was beaten up by Albedo, who had gone crazy after learning he couldn't die.

The Y-Data is actually the key to Old Miltia. Old Miltia, or First Miltia, or just plain old "Miltia," is the planet that the Miltian Conflict took place upon. Due to the events such as the U.R.T.V.s being infected by U-DO, U-Tic being in the war, the destruction from the Realiens who went crazy thanks to the Song of Nephilim.

So, a recap: Realiens went crazy, started busting things up, Joachim Mizrahi brought the gnosis into the world, the Zohar went crazy and messed up the place, the U.R.T.V.s became infected by U-DO and started killing people, the U-Tic organization was trying to retrieve some data that Jin Uzuki had stolen, and chaos and Caanan were on their way to see the U.R.T.V.s for their own mission. Yeah, everything's pretty chaotic. Of course, it doesn't help matters much that everyone is killing everyone else.

So far, MOMO has been "normal," if your hands glowing when Gnosis are nearby and you losing your neuro network (electronic brain for the not so smart) when trying to save the Y Data is normal. Though, she's half way normal. Plus, she can really hurt people some times with her magic and Ether Bow (Bow and Arrow). Though, I'll try not to get into that right now.

Realiens

Realiens are strange creatures, given no ability to reproduce, are manufactured in factories, and having no personality (At least, for most), it makes it quite tough to defend them. They're not human, people are racist against them, even when receiving the rights that humans have, they were still treated badly, and there are people out there that think of them just as meat shields. Some even use their neuro as a drug (Which eventually causes them to not be able to live without it, and causes the corning of the skin forming a scar of sorts).

Though most realiens are treated badly, MOMO is an exception. As a member of the 100-series, and the prototype of all of the 100-series realiens, she's gone through things much worse than a human has and has experienced joy that no other realien will experience. She's survived being assaulted by Albedo (He used his powers of regeneration to scare the living heck out of her), and has even had to live knowing that her personality and heart are all fake, just programs. She can't change her personality at all because she was programmed that way. It can be quite saddening at times what kinds of ordeals she has to go through.